/*body > * {*/
    /*background-size: cover;*/
/*}*/

/*.opaque-overlay {*/
    /*overflow: hidden;*/
    /*position: relative;*/
/*}*/
/*> *:first-child:before {*/
    /*content: '';*/
    /*width: 100%;*/
    /*height: 100%;*/
    /*display: block;*/
    /*position: absolute;*/
    /*left: 0px;*/
    /*top: 0px;*/
    /*pointer-events:none;*/
    /*background: rgba(map-get($theme-colors, 'dark'), 0.25);*/
    /*}*/



/*.gradient-overlay {*/
    /*overflow: hidden;*/
    /*position: relative;}*/

/*> *:first-child:before {*/
    /*content: '';*/
    /*width: 100%;*/
    /*height: 100%;*/
    /*display: block;*/
    /*position: absolute;*/
    /*left: 0px;*/
    /*top: 0px;*/
    /*pointer-events:none;*/
    /*background: linear-gradient(to top , map-get($theme-colors, 'dark') 0%, transparent 100%);*/

/*}*/
.head{
    margin-bottom: 100px;
}
.py-5{
    padding-bottom: 3rem !important;
}
@media (min-width: 576px){
    .container {
        max-width: 540px;
    }
}
@media (min-width: 768px){
    .container {
        max-width: 720px;
    }
}
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}



.container {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: 15px;
    padding-left: 15px;
}
.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}
.text-title {
    text-align: center;
    color: #004a86 !important;
    margin-top: 20px;
}
h3, .h3 {
    font-size: 1.75rem;
}
h1{
    margin-bottom: 0.5rem;
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.display-3 {
    font-size: 5.5rem;
    font-weight: 300;
    line-height: 1.1;
}

.list-group {
    border: 1px solid #004a86;
    border-radius: 2px;
    align-items: center;
    display: flex;
    flex-direction: column;
    padding-left: 0;
    margin-bottom: 0;
}
ul{
    margin-top: 0;
}
.list-group-item:first-child {
    border-top-left-radius: 0.25rem;
    border-top-right-radius: 0.25rem;
}
.list-group-item {
    width: 80%;
    border: none;
    border-bottom: 1px solid #004a86;
    padding-left: 0;
    padding-bottom: 0.5rem;
    margin-bottom: 0.25rem;
    /* margin-bottom: 0; */
    text-align: left;
}
.list-group-item {
    position: relative;
    display: block;
    padding: 0.75rem 1.25rem;
    margin-bottom: -1px;
}
.card {
    border: none;
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
}

.card-header:first-child {
    border-radius: calc(0.25rem - 1px) calc(0.25rem - 1px) 0 0;
}
.card-header {
    background-color: white;
    border-bottom: 1px solid #32b16c;
    padding-top: 0;
}
.card-header {
    padding: 0.75rem 1.25rem;
    margin-bottom: 0;
}
.card-body {
    flex: 1 1 auto;
    padding: 1.25rem;
}
p {
    margin-top: 0;
    margin-bottom: 1rem;
}

.text-primary{
    color:#004a86 !important;
}
.text-title{
    text-align: center;
    color:#004a86 !important;
    margin-top: 20px;
}
.list-group{
    border: 1px solid #014d86;
    border-radius: 2px;
    align-items: center;
}
.list-group-item{
    width: 80%;
    border: none;
    border-bottom: 1px solid #014d86;
    padding-left: 0;
    padding-bottom: 0.5rem;
    margin-bottom: 0.25rem;
    /*margin-bottom: 0;*/
    text-align: left;

}
.BaoMingItem{
    border-bottom: none;
    padding-right: 0;
}
.BaoMing{
    width: 100%;
    height: 120px;
    background-color: #014d86;
    padding-left: 10%;
    padding-top: 20px;
    border-radius: 2px;
}
.card{
    border:none;
}
.card-header{
    background-color: white;
    border-bottom: 1px solid #014d86;
    padding-top: 0;

}
.CourseVideoImg{
    width: 100%;
    height: 120px;
    border:1px solid #014d86;
    position: relative;
    margin-bottom: -67.5px;
}
.ActivateVideoLogo{
    position: relative;
    width: 15px;
    height: 15px;
    margin-left: calc( 50% - 7.5px );
}
.videos{
    width: 50%;
    left: 25%;
    top:20px;
}
#shadow{
    display: none;
    background-color: black;
    opacity: 0.75;
    filter: alpha(opacity:0.5);
    position: fixed;
    top: 0px;
    left: 0px;
    z-index: 1031;
}
.videos{
    opacity: 0;
    z-index: 1032;
    position: fixed;
    transform: scale(0.1,0.1);
    object-fit:fill;
}

.TeacherPic{
    width: 80px;
    height: 80px;
    float: left;
    border-radius: 50%;
    background-image: url(../images/hengjinCai.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    position: relative;
    margin-top: -8px;

}
.TeacherIntroText{
    position: relative;
    margin-left: 128px;
    margin-top: 30px;
    font-size: 16px;
}
.TeacherIntroText a{
    font-size: 20px;
}

.accordion{
    margin-bottom: 20px;
}
.accordion-group{
    margin-bottom: 2px;
    border: 1px solid #e5e5e5;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
}
.accordion-toggle{
    display: block;
    padding: 8px 15px;
}
.collapse{
    position: relative;
    height: 0;
    overflow: hidden;
    -webkit-transition: height 0.35s ease;
    -moz-transition: height 0.35s ease;
    -o-transition: height 0.35s ease;
    transition: height 0.35s ease
}
.accordion-inner{
    padding: 9px 15px;
    border-top: 1px solid #e5e5e5;
}
